19 Questions
What is the primary reason for pyroclastic surges being more deadly than pyroclastic flows?
The poisonous gases contained in the pyroclastic clouds
What is the main difference between pyroclastic flows and tephra?
Size of solid fragments ejected
Why is tephra often referred to as blocks or bombs?
Because they are propelled from the volcano at high speeds
What potential hazard, apart from destruction of vegetation, is associated with tephra?
Generation of lightning strikes
What characteristic makes tephra extremely destructive to individuals and property?
High speeds at which they travel
Which volcanic eruption resulted in the loss of food supplies for thousands due to tephra destruction?
Tambora eruption in 1815
Why are pyroclastic surges more deadly than pyroclastic flows despite having equal temperatures?
Presence of poisonous gases and steam in the pyroclastic clouds
What characteristic differentiates tephra from pyroclastic flows in terms of speed?
Speed at which solid fragments are ejected
What danger is posed by the thick layers of ash associated with tephra?
Respiratory health impact across a wide region
What is the primary difference between pyroclastic flows and pyroclastic surges?
The distance they can travel away from the volcano
Why are pyroclastic clouds considered dangerous to living organisms?
They contain superheated ash and gases
What makes tephra different from pyroclastic flows?
The size of the solid fragments
How do tephra cause destruction to individuals and property?
By traveling at high speeds
What is a common feature of tephra that makes them hazardous to individuals?
Their electric charge at high altitudes
Why are pyroclastic surges more likely to result in human casualties?
Due to the presence of steam in the cloud
Which hazard is NOT mentioned as a consequence of tephra eruptions?
Acid rain formation
What distinguishes pyroclastic surges from pyroclastic clouds?
The direction they move in relation to the volcano
What is a significant characteristic of tephra that contributes to their destructive potential?
Their weight and size compared to other volcanic matter
What is a key reason tephra is considered dangerous during volcanic eruptions?
Their potential to travel at high speeds far from the volcano
Explore the fascinating world of volcanoes and learn about their formation at tectonic plate boundaries. Discover how the Earth's geological features are shaped by volcanic activity.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
